This is a note to let you know that I've just added the patch titled
arm64: elf: fix core dumping to match what glibc expects
to the 3.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-elf-fix-core-dumping-to-match-what-glibc-expects.patch
and it can be found in the queue-3.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 9cf2b72b25f3f6a5a1a46a4f36037e66de52465c Mon Sep 17 00:00:00 2001
From: Will Deacon <[email protected]>
Date: Tue, 22 Jan 2013 15:34:40 +0000
Subject: arm64: elf: fix core dumping to match what glibc expects
From: Will Deacon <[email protected]>
commit 9cf2b72b25f3f6a5a1a46a4f36037e66de52465c upstream.
The kernel's internal definition of ELF_NGREG uses struct pt_regs, which
means that we disagree with userspace on the size of coredumps since
glibc correctly uses the user-visible struct user_pt_regs.
This patch fixes our ELF_NGREG definition to use struct user_pt_regs
and introduces our own ELF_CORE_COPY_REGS to convert between the user
and kernel structure definitions.
Signed-off-by: Will Deacon <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/arm64/include/asm/elf.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/arm64/include/asm/elf.h
+++ b/arch/arm64/include/asm/elf.h
@@ -26,7 +26,10 @@
typedef unsigned long elf_greg_t;
-#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
+#define ELF_NGREG (sizeof(struct user_pt_regs) / sizeof(elf_greg_t))
+#define ELF_CORE_COPY_REGS(dest, regs) \
+ *(struct user_pt_regs *)&(dest) = (regs)->user_regs;
+
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef struct user_fpsimd_state elf_fpregset_t;
Patches currently in stable-queue which might be from [email protected] are
queue-3.7/arm64-elf-fix-core-dumping-to-match-what-glibc-expects.patch
queue-3.7/arm64-makefile-fix-uname-munging-when-setting-arch-on-native-machine.patch
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